Glitch website not working on Safari Iphone?

Hi guys i have this site

works perfectly every where … but sometimes it is failing on an Iphone that is browsing via Safari?!

mostly if that same iPhone opens in Chrome it works… but sometimes it fails with Chrome too!!

is there something to do with a WWebkit which apple doesnt allow(read in another post)? But if that is true than how come on few iPhones it is running?